Crop and Quality Formation of Soybean Sorts in Depending on Norms of Phosphorus

The research work was conducted in the conditions of irrigated typical grey soil. There is studied the influence of phosphorus (50, 100, 150 and 200 kg/ha) on the preceding fertilization of 50 kg nitrogen and 75 kg potassium for grain crop formation in this experience. It is established that optimum phosphorus norm of operating substance 100 kg/ha in the typical grey soil condition, which provide grain yield of the “Orzu” sort of soybean in average 25,1 s/ha for 3 years, and “Genetic-1” sort of soybean in average 23,6 s/ha for 2 years at the after reap of the winter wheat harvesting. In comparison with the control, the yield of the sort of soybean “Orzu” has increased by 40, 2 %, the sort of soybean “Genetic-2” has increased by 47, 5 %. The maximum number of beans and seeds of the sort “Orzu” are reached 50,4 and 93; beans and seeds of the sort “Genetic-1” are reached 69,2 and 100,8.